The church of St Oswald, named after a Scottish missionary, had been established at the beginning of the 14th century.
Towards the end of the century, one of the trustees of the church was the local knight Oswald Milser. During the communion services he demanded the large portion of the communion wafer that was normally kept for the priest.
As the knight was known as an impatient and important person, the priest did not dare refuse him.

However, as soon as the wafer touched Oswald Milser's lips, he began to sink into the stone floor. The frightened Milser tried to hold firm to the altar but the stone there started to melt under his hands as well.
The priest quickly removed the wafer from the knight's lips and the stone became firm again. The wafer however began to run with blood. The alarmed Milser fell to his knees and cried for forgiveness.
He retreated from the world and died two years later in Stams monastery in the Inn valley.
